advertisement

How to Use Equation Triangles in Calculations There are many occasions when you have to use an equation in Science, particularly in Physics. The Equation Triangles are a way in which you can easily learn to use and rearrange equations, even if you are not confident in your Maths. With a triangle such as the one here, you can find V, I or R. To find V cover it with your thumb, you can see the equation I x R. To find I cover it with your thumb, you see V divided by R or V/R. Finally to get R, cover it and you will see V divided by I or V/I V I X R Triangles work for any equation where you have to use 3 different variables, they may also work for more letters if some of them are linked together. To put an equation into a triangle just look at how it is written Eg. F = M x A (force = mass x acceleration ) In this equation the F is alone so it will be at the top M x A will be at the bottom, so we get F M A Other suitable equations would be, V =f λ for speed of waves, V= d/t for velocity, Wd= F d for work done GPE= mg x h for gravitational potential energy ( if mass and gravity are calculated together W= m x g to work out weight) P=I x V for electrical power. Q = I x t to calculate charge